X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=sound%2Fcore%2Frtctimer.c;h=97b30fb4c361193b1ef65821a46dea9f67736d9b;hb=0988c37c248e824953d95a11412696c348dbca91;hp=9f7b32e1ccdeb29a7122aaea0f485a0dafa144c5;hpb=af768c6711de615abf9c679732a2f8245a4c286c;p=linux-2.6

diff --git a/sound/core/rtctimer.c b/sound/core/rtctimer.c
index 9f7b32e1cc..97b30fb4c3 100644
--- a/sound/core/rtctimer.c
+++ b/sound/core/rtctimer.c
@@ -20,10 +20,10 @@
  *
  */
 
-#include <sound/driver.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/moduleparam.h>
+#include <linux/log2.h>
 #include <sound/core.h>
 #include <sound/timer.h>
 
@@ -129,7 +129,7 @@ static int __init rtctimer_init(void)
 	struct snd_timer *timer;
 
 	if (rtctimer_freq < 2 || rtctimer_freq > 8192 ||
-	    (rtctimer_freq & (rtctimer_freq - 1)) != 0) {
+	    !is_power_of_2(rtctimer_freq)) {
 		snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n",
 			   rtctimer_freq);
 		return -EINVAL;